Technology has been installed to block signals from Westminster Abbey to prevent guests from tweeting blow by blows of Prince William and Kate Middleton's big day. It's also probably to ensure that snarky comments and hashtags such as #QueenElizabeth#uglyhat are kept to a minimum.

The major purpose, Yahoo reports, is to prevent guests' cellphones from going off during the ceremony.

For those monarchy junkies without a ticket to the big event, Twitter has unveiled a comprehensive Royal Wedding Guide. It includes a list of the best feeds to follow for updates, including the official @Clarencehouse feed which will boast videos and photos.

It also has an extensive list of hashtags to use, including such fairly obvious suggestions as #katemiddleton and #rw2011.

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